Two new species of the family Diptilomiopidae (Acari Eriophyoidea) from China are described and illustrated. They are Catarhinus sanguinalus sp. nov. https://www.selleckchem.com/products/phosphoramidon-disodium-salt.html on Digitaria?sanguinalis (Poaceae) and Rhyncaphytoptus mandshuricae sp. nov. on Fraxinus?mandshurica (Oleaceae). Both new species are vagrant on lower leaf surface. No apparent damage to the host was observed. In addition to the descriptions, a key to Catarhinus species was provided.A compilation of the ciliate (Ciliophora) species found on marine and fresh water bryozoans as epibionts has been carried out based on published records. The checklist includes the taxonomic position of each species of epibiontic ciliate, the species of basibiont bryozoans, localities and the bibliographic references. Altogether 40 ciliate species from classes Spirotrichea (two species); Suctorea (sixteen species); Oligohymenophorea, subclass Peritrichia (sixteen species) and Heterotrichea, family Folliculinidae (six species) were listed. Among registered species, six were reported on bryozoans only. Only one species of peritrich ciliate Ellobiophrya conviva adapted to inhabit on tentacles of bryozoans with special adhesive organelle (cinctum or adhesive ring) indicate a possible specific to bryozoan host.A new species, Gammarus baengnyeongensis sp. nov., belonging to the family Gammaridae Leach, 1814 was collected from the Baengnyeongdo and Daecheongdo islands in South Korea. This new species is characterized by the flagellum of antenna 2 with calceoli, and the length ratio of outer ramus to inner ramus of uropod 3. Descriptions of diagnostic characteristics of the species are provided in the text. We performed statistical analysis to confirm the significance of morphological differences of interspecies. Additionally, we compare the new species to related species by the partial sequence of the mitochondrial cytochrome c oxidase subunit 1 (CO1) gene. Genetic distances between the new species and closely related species rated from 29.1-40.8%, which highly supports Gammarus baengnyeongensis sp. nov. as a valid species. In this study, we add one new Gammarus species in Korean waters.The external morphology of two molecularly identified tadpoles of the genus Staurois, S. parvus and S. tuberilinguis is described. These tadpoles display a typical fossorial morphology characterized by a strongly depressed body, small subcutaneous eyes, a vermiform appearance with a long tail and reduced fins, a nearly pigmentless skin, a KRF of 11+1 on the upper labium and numerous keratodont rows on the lower one. The two species can be distinguished by several morphological differences, the most conspicuous are the eye condition (not bulging and covered by skin in S. tuberilinguis) and the presence of numerous white isolated acini on the body and tail in S. parvus. These differences support the specific status of S. parvus relatively to S. tuberilinguis despite low genetic divergence between these two taxa. The morphology of these tadpoles, as well as the buccopharyngeal anatomy of S. parvus, are compared to those of the tadpoles in the family Centrolenidae and the definition of the fossorial ecomorphological guild is updated.Indian species in the genus Sphingius Thorell, 1890 are revised, mostly based on the type material available in the National Zoological Collection, Zoological Survey of India, Kolkata. Sphingius barkudensis Gravely, 1931, S. nilgiriensis Gravely, 1931 and S. paltaensis Biswas Biswas, 1992 are redescribed. Two new combinations and one new synonymy are recognised S. longipes Gravely, 1931 is transferred to the cithaeronid genus Inthaeron Platnick, 1991 and S. kambakamensis Gravely, 1931 is transferred to the corinnid genus Cambalida Simon, 1909, while S. delakharae Pawaria, Bodkhe, Kamble, Uniyal Talwar, 2018 syn. nov. is synonymised with S. barkudensis. Images of all the examined type material are provided.Apogon fugax is described as a new species of cardinalfishes based on a specimen trawled off Jizan (Saudi Arabia), southern Red Sea, at a depth of 60-67 m; two specimens trawled off southwest of Ayeyarwady Delta, Myanmar, at 54-129 m; and two specimens trawled off Western Australia at 166 m. The new species shares characters with the modified 'talboti look-alikes' species group (i.e., A. caudicinctus, A. dianthus and A. soloriens) as well as A. rubrifuscus and A. deetsie (both previously also assigned to the latter species group) in having two supraneurals, 12 pectoral-fin rays (13 rays in A. soloriens), and an enlarged, membranous, ventral preopercular edge. Molecular phylogenetic analysis of the apogonid tribe Apogonini, however, revealed that A. fugax n. sp. and its most closely related congeners, A. deetsie and A. rubrifuscus, form a separate phylogenetic clade unrelated to that formed by the 'talboti look-alikes' species group that is part of the A. unicolor species group. Apogon fugax n. sp. is distinguished from the species of the 'talboti look-alikes' species group, A. deetsie and A. rubrifuscus, in having a large head (2.2-2.4 in SL versus 2.4-2.8 in SL), longer first dorsal-fin spine (1.7-2.0 versus 2.7-4.0 in length of the second spine), and in their gill rakers count (developed gill rakers on the first gill arch 11-12 versus 8-9 in A. soloriens and 13-20 in the other four species).Tilapia is the common name for a wide spectrum of cichlid fishes usually selected for aquaculture activities. However, some aspects of the natural history of these fishes, such as the diversity of certain ectoparasitic protistan groups remain understudied. In order to understand the diversity of ciliates of the family Trichodinidae parasitizing tilapia around the world, a database with all available accounts was assembled. This information, along with records derived from our own recent research, allowed us to generate a checklist containing all the records for tilapia-Trichodinidae associations. The checklist is presented as a host-parasite list containing 44 nominal taxa from 29 countries on four continents, and it also presents the first data from Argentina, where tilapia culture is still an incipient, but growing activity. The observed high species richness of trichodinids is probably derived from a set of specific taxa for tilapia, along with an important component of species acquired from the new environments where tilapia have been introduced.